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Fix delete node permission on Fedora CoreOS node shutdown

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* On cloud platforms, `delete-node.service` tries to delete the
local node (not always possible depending on preemption time)
* Since v1.18.3, kubelet TLS bootstrap generates a kubeconfig
in `/var/lib/kubelet` which should be used with kubectl in
the delete-node oneshot
This commit is contained in:
Dalton Hubble
2020-10-18 23:29:19 -07:00
parent eda78db08e
commit df17253e72
5 changed files with 15 additions and 7 deletions
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3
aws/fedora-coreos/kubernetes/workers/fcc/worker.yaml
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@ -86,10 +86,11 @@ systemd:
[Unit]
Description=Delete Kubernetes node on shutdown
[Service]
Environment=KUBELET_IMAGE=quay.io/poseidon/kubelet:v1.19.3
Type=oneshot
RemainAfterExit=true
ExecStart=/bin/true
ExecStop=/bin/bash -c '/usr/bin/podman run --volume /etc/kubernetes:/etc/kubernetes:ro,z --entrypoint /usr/local/bin/kubectl quay.io/poseidon/kubelet:v1.19.3 --kubeconfig=/etc/kubernetes/kubeconfig delete node $HOSTNAME'
ExecStop=/bin/bash -c '/usr/bin/podman run --volume /var/lib/kubelet:/var/lib/kubelet:ro,z --entrypoint /usr/local/bin/kubectl $${KUBELET_IMAGE} --kubeconfig=/var/lib/kubelet/kubeconfig delete node $HOSTNAME'
[Install]
WantedBy=multi-user.target
storage: